Oil Pump Assemble

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Important: Replace the pressure relief valve spring when reusing the oil pump.

Install the following items:
1. 1.1. The pressure relief valve
2. 1.2. The pressure relief spring
3. 1.3. The retaining pin
Fig 1: Pressure Relief Valve, Spring & Retaining Pin
Courtesy of GENERAL MOTORS CORP.
Coat the drive gear, the driven gear and the housing gear surfaces with clean engine oil.
Install the drive gear and the driven gear into the pump body. Align the matching marks on the gears. Install the smooth side of the gear toward the pump cover.

Fig 2: Oil Pump Drive & Driven Gears
Courtesy of GENERAL MOTORS CORP.
Install the oil pump cover.

Fig 3: Oil Pump Cover
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the oil pump cover bolts.
Tighten

Tighten the oil pump cover bolts to 12 N.m (106 lb in).
Inspect the oil pump for smoothness of operation by turning the oil pump driveshaft by hand.

Fig 4: Oil Pump Cover Bolts
Courtesy of GENERAL MOTORS CORP.

NOTE: Ensure the oil pump driveshaft is inspected for wear and/or damage, and replaced if necessary. An excessively worn or damaged oil pump driveshaft may fail causing severe engine damage.
Install the oil pump driveshaft and the new retainer.

Fig 5: Oil Pump & Retainer
Courtesy of GENERAL MOTORS CORP.